APA (7th ed.) Citation

Gibbs, P. (2012). The Soul of a Nation. Project Gutenberg.

Chicago Style (17th ed.) Citation

Gibbs, Philip. The Soul of a Nation. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Gibbs, Philip. The Soul of a Nation. Project Gutenberg, 2012.

Warning: These citations may not always be 100% accurate.